The digestive enzyme that hydrolyzes lipids, acts as catalyst for the hydrolysis of lipid, aids emulsification of fat, and keeps tiny fat droplets suspended in the aqueous content of the gut is LIPASE. This enzyme is a subclass of esterases that breakdown fats to fatty acids and glycerol and other alcohols.
An 18 month old baby and experiencing the world through senses is in Piaget's sensorimotor stage. The sensorimotor stage is the development of our senses such as, sense of sight, hearing, feeling, tasting and smelling. The sensorimotor stage is developed through 18 to 24 months of age.
I believe that they all effect the production of hormones